---- Minecraft Crash Report ----
// My bad.

Time: 05.11.21, 15:19
Description: mouseClicked event handler

java.lang.IllegalStateException: failed to create a child event loop
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:88)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:58)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:47)
	at io.netty.channel.MultithreadEventLoopGroup.null <init>(null)(MultithreadEventLoopGroup.java:59)
	at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:77)
	at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:72)
	at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:59)
	at net.minecraft.server.network.ServerConnectionListener.io.netty.channel.nio.NioEventLoopGroup lambda$static$0()(ServerConnectionListener.java:56)
	at com.google.common.base.Suppliers$NonSerializableMemoizingSupplier.null get(null)(Suppliers.java:160)
	at net.minecraft.util.LazyLoadedValue.java.lang.Object get()(LazyLoadedValue.java:19)
	at net.minecraft.server.network.ServerConnectionListener.java.net.SocketAddress startMemoryChannel()(ServerConnectionListener.java:148)
	at net.minecraft.client.Minecraft.void doLoadLevel(java.lang.String,net.minecraft.core.RegistryAccess$RegistryHolder,java.util.function.Function,com.mojang.datafixers.util.Function4,boolean,net.minecraft.client.Minecraft$ExperimentalDialogType)(Minecraft.java:2083)
	at net.minecraft.client.Minecraft.void createLevel(java.lang.String,net.minecraft.world.level.LevelSettings,net.minecraft.core.RegistryAccess$RegistryHolder,net.minecraft.world.level.levelgen.WorldGenSettings)(Minecraft.java:1943)
	at net.minecraft.client.Minecraft.net.minecraft.world.level.DataPackConfig lambda$createLevel$31(net.minecraft.world.level.LevelSettings,net.minecraft.world.level.storage.LevelStorageSource$LevelStorageAccess)(Minecraft.java:1943)
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.void onCreate()(CreateWorldScreen.java:279)
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.void init()(CreateWorldScreen.java:215)
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.void lambda$init$11(net.minecraft.client.gui.components.Button)(CreateWorldScreen.java:215)
	at net.minecraft.client.gui.components.Button.void onPress()(Button.java:40)
	at net.minecraft.client.gui.components.AbstractButton.void onClick(double,double)(AbstractButton.java:16)
	at net.minecraft.client.gui.components.AbstractWidget.boolean mouseClicked(double,double,int)(AbstractWidget.java:121)
	at net.minecraft.client.gui.components.events.ContainerEventHandler.boolean mouseClicked(double,double,int)(ContainerEventHandler.java:27)
	at net.minecraft.client.gui.components.events.ContainerEventHandler.void setFocused(net.minecraft.client.gui.components.events.GuiEventListener)(ContainerEventHandler.java:27)
	at net.minecraft.client.MouseHandler.void lambda$onPress$0(boolean[],net.minecraft.client.gui.screens.Screen,double,double,int)(MouseHandler.java:94)
	at net.minecraft.client.gui.screens.Screen.void wrapScreenError(java.lang.Runnable,java.lang.String,java.lang.String)(Screen.java:490)
	at net.minecraft.client.MouseHandler.void onPress(long,int,int,int)(MouseHandler.java:94)
	at net.minecraft.client.MouseHandler.void lambda$setup$4(long,int,int,int)(MouseHandler.java:165)
	at net.minecraft.util.thread.BlockableEventLoop.void execute(java.lang.Runnable)(BlockableEventLoop.java:101)
	at net.minecraft.client.MouseHandler.void lambda$setup$5(long,int,int,int)(MouseHandler.java:165)
	at org.lwjgl.glfw.GLFWMouseButtonCallbackI.null callback(null)(GLFWMouseButtonCallbackI.java:36)
	at org.lwjgl.system.JNI.null invokeV(null)(JNI.java)
	at org.lwjgl.glfw.GLFW.null glfwWaitEventsTimeout(null)(GLFW.java:3174)
	at com.mojang.blaze3d.systems.RenderSystem.void limitDisplayFPS(int)(RenderSystem.java:190)
	at net.minecraft.client.Minecraft.void runTick(boolean)(Minecraft.java:1140)
	at net.minecraft.client.Minecraft.void run()(Minecraft.java:728)
	at net.minecraft.client.main.Main.void main(java.lang.String[])(Main.java:217)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
	at io.netty.channel.nio.NioEventLoop.null openSelector(null)(NioEventLoop.java:177)
	at io.netty.channel.nio.NioEventLoop.null <init>(null)(NioEventLoop.java:151)
	at io.netty.channel.nio.NioEventLoopGroup.null newChild(null)(NioEventLoopGroup.java:127)
	at io.netty.channel.nio.NioEventLoopGroup.null newChild(null)(NioEventLoopGroup.java:36)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:84)
	... 31 more
Caused by: java.io.IOException: Unable to establish loopback connection
	at java.base/sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101)
	at java.base/sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:67)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
	at java.base/sun.nio.ch.PipeImpl.<init>(PipeImpl.java:194)
	at java.base/sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:143)
	at java.base/sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
	at io.netty.channel.nio.NioEventLoop.null openSelector(null)(NioEventLoop.java:175)
	... 35 more
Caused by: java.net.SocketException: Invalid argument: connect
	at java.base/sun.nio.ch.UnixDomainSockets.connect0(Native Method)
	at java.base/sun.nio.ch.UnixDomainSockets.connect(UnixDomainSockets.java:146)
	at java.base/sun.nio.ch.UnixDomainSockets.connect(UnixDomainSockets.java:142)
	at java.base/sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:849)
	at java.base/java.nio.channels.SocketChannel.open(SocketChannel.java:285)
	at java.base/sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:131)
	at java.base/sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
	... 41 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:88)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:58)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:47)
	at io.netty.channel.MultithreadEventLoopGroup.null <init>(null)(MultithreadEventLoopGroup.java:59)
	at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:77)
	at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:72)
	at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:59)
	at net.minecraft.server.network.ServerConnectionListener.io.netty.channel.nio.NioEventLoopGroup lambda$static$0()(ServerConnectionListener.java:56)
	at com.google.common.base.Suppliers$NonSerializableMemoizingSupplier.null get(null)(Suppliers.java:160)
	at net.minecraft.util.LazyLoadedValue.java.lang.Object get()(LazyLoadedValue.java:19)
	at net.minecraft.server.network.ServerConnectionListener.java.net.SocketAddress startMemoryChannel()(ServerConnectionListener.java:148)
	at net.minecraft.client.Minecraft.void doLoadLevel(java.lang.String,net.minecraft.core.RegistryAccess$RegistryHolder,java.util.function.Function,com.mojang.datafixers.util.Function4,boolean,net.minecraft.client.Minecraft$ExperimentalDialogType)(Minecraft.java:2083)
	at net.minecraft.client.Minecraft.void createLevel(java.lang.String,net.minecraft.world.level.LevelSettings,net.minecraft.core.RegistryAccess$RegistryHolder,net.minecraft.world.level.levelgen.WorldGenSettings)(Minecraft.java:1943)
	at net.minecraft.client.Minecraft.net.minecraft.world.level.DataPackConfig lambda$createLevel$31(net.minecraft.world.level.LevelSettings,net.minecraft.world.level.storage.LevelStorageSource$LevelStorageAccess)(Minecraft.java:1943)
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.void onCreate()(CreateWorldScreen.java:279)
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.void init()(CreateWorldScreen.java:215)
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.void lambda$init$11(net.minecraft.client.gui.components.Button)(CreateWorldScreen.java:215)
	at net.minecraft.client.gui.components.Button.void onPress()(Button.java:40)
	at net.minecraft.client.gui.components.AbstractButton.void onClick(double,double)(AbstractButton.java:16)
	at net.minecraft.client.gui.components.AbstractWidget.boolean mouseClicked(double,double,int)(AbstractWidget.java:121)
	at net.minecraft.client.gui.components.events.ContainerEventHandler.boolean mouseClicked(double,double,int)(ContainerEventHandler.java:27)
	at net.minecraft.client.gui.components.events.ContainerEventHandler.void setFocused(net.minecraft.client.gui.components.events.GuiEventListener)(ContainerEventHandler.java:27)
	at net.minecraft.client.MouseHandler.void lambda$onPress$0(boolean[],net.minecraft.client.gui.screens.Screen,double,double,int)(MouseHandler.java:94)

-- Affected screen --
Details:
	Screen name: net.minecraft.client.gui.screens.worldselection.CreateWorldScreen
Stacktrace:
	at net.minecraft.client.gui.screens.Screen.void wrapScreenError(java.lang.Runnable,java.lang.String,java.lang.String)(Screen.java:490)
	at net.minecraft.client.MouseHandler.void onPress(long,int,int,int)(MouseHandler.java:94)
	at net.minecraft.client.MouseHandler.void lambda$setup$4(long,int,int,int)(MouseHandler.java:165)
	at net.minecraft.util.thread.BlockableEventLoop.void execute(java.lang.Runnable)(BlockableEventLoop.java:101)
	at net.minecraft.client.MouseHandler.void lambda$setup$5(long,int,int,int)(MouseHandler.java:165)
	at org.lwjgl.glfw.GLFWMouseButtonCallbackI.null callback(null)(GLFWMouseButtonCallbackI.java:36)
	at org.lwjgl.system.JNI.null invokeV(null)(JNI.java)
	at org.lwjgl.glfw.GLFW.null glfwWaitEventsTimeout(null)(GLFW.java:3174)

-- Last reload --
Details:
	Reload number: 1
	Reload reason: initial
	Finished: Yes
	Packs: Default
Stacktrace:
	at net.minecraft.client.ResourceLoadStateTracker.void fillCrashReport(net.minecraft.CrashReport)(ResourceLoadStateTracker.java:49)
	at net.minecraft.client.Minecraft.net.minecraft.CrashReport fillReport(net.minecraft.CrashReport)(Minecraft.java:2406)
	at net.minecraft.client.Minecraft.void run()(Minecraft.java:747)
	at net.minecraft.client.main.Main.void main(java.lang.String[])(Main.java:217)

-- System Details --
Details:
	Minecraft Version: 1.17.1
	Minecraft Version ID: 1.17.1
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 16.0.1, Microsoft
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
	Memory: 647241912 bytes (617 MiB) / 1577058304 bytes (1504 MiB) up to 2147483648 bytes (2048 MiB)
	CPUs: 12
	Processor Vendor: GenuineIntel
	Processor Name: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
	Identifier: Intel64 Family 6 Model 158 Stepping 10
	Microarchitecture: Coffee Lake
	Frequency (GHz): 3,70
	Number of physical packages: 1
	Number of physical CPUs: 6
	Number of logical CPUs: 12
	Graphics card #0 name: NVIDIA GeForce RTX 2070 SUPER
	Graphics card #0 vendor: NVIDIA (0x10de)
	Graphics card #0 VRAM (MB): 4095,00
	Graphics card #0 deviceId: 0x1e84
	Graphics card #0 versionInfo: DriverVersion=30.0.14.7212
	Memory slot #0 capacity (MB): 8192,00
	Memory slot #0 clockSpeed (GHz): 3,20
	Memory slot #0 type: DDR4
	Memory slot #1 capacity (MB): 8192,00
	Memory slot #1 clockSpeed (GHz): 3,20
	Memory slot #1 type: DDR4
	Virtual memory max (MB): 27574,96
	Virtual memory used (MB): 22101,61
	Swap memory total (MB): 11264,00
	Swap memory used (MB): 242,35
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Launched Version: 1.17.1
	Backend library: LWJGL version 3.2.2 build 10
	Backend API: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2 GL version 3.2.0 NVIDIA 472.12, NVIDIA Corporation
	Window size: 854x480
	GL Caps: Using framebuffer using OpenGL 3.2
	GL debug messages: 
	Using VBOs: Yes
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.
	Type: Integrated Server (map_client.txt)
	Graphics mode: fancy
	Resource Packs: vanilla
	Current Language: English (US)
	CPU: 12x Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
	Player Count: 0 / 8; []
	Data Packs: vanilla